
int main(void){
int a,b;
scanf("%d,%d",&a,&b);
printf("enter two number:");
printf("add:%d\n",add5317(a,b));
printf("sub:%d\n",sub5317(a,b));
printf("mul:%d\n",mul5317(a,b));
printf("div:%lf\n",div5317(a,b));
return 0;
}
